The amount of breading allowed on seafood is different than what is allowed on meat patties. Meat patties such as breaded hamburger, pork, chicken, etc., are allowed to be no more than 30 percent breading. On seafood the amount of breading is 50 percent.
If you were going to test the difference between two breaded products an easy way is to take a pound of each product being tested, making sure it is frozen, and wash the breading off using cold running water, then weigh the two products to see if they each weigh one half pound. This is also a good way to compare breaded shrimp.